What actually happened in February is very easy to describe. Why it occurred, and what the consequences will be, is very much more complicated. So what did happen then? Basically, nothing. There was no wind. There were no clouds. There was certainly no rain. It warmed up nicely during the day under sapphire skies, but then it got very cold indeed at night. Portugal, along with much of the rest of Europe, was held in the grip of a very stable cool spell for several weeks. The lengthening days permitted quite warm maximum temperatures on occasions but the nights were bitter.